In Italian, magnachi is a derogatory slang word for an African-American or African person of a dark skin complexion. It is of Neopolitan dialect and is not commonly used. Properly conjugated as such: Magnaco - masculine singular Magnaca - feminine singular Magnachi - Masculine plaural (also used as slang for any type of african-american (eg.- one man, two women... all magnachi)) Magnache - feminine singular.